From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: MrHua269 <mrhua269@gmail.com>
Date: Sat, 31 May 2025 16:28:19 +0800
Subject: [PATCH] Fix mispatched entity custom spawning logic

we should use local players as each tickregion will only foreach their own player entities so that we won't come across async accessing world data

diff --git a/net/minecraft/world/entity/npc/CatSpawner.java b/net/minecraft/world/entity/npc/CatSpawner.java
index f5d27988605d48cdf314f28ba332f33f0a314266..39b506dad0601b2d75acb14989f2758132155d1b 100644
--- a/net/minecraft/world/entity/npc/CatSpawner.java
+++ b/net/minecraft/world/entity/npc/CatSpawner.java
@@ -27,7 +27,7 @@ public class CatSpawner implements CustomSpawner {
             worldData.catSpawnerNextTick--; // Folia - region threading
             if (worldData.catSpawnerNextTick <= 0) { // Folia - region threading
                 worldData.catSpawnerNextTick = 1200; // Folia - region threading
-                Player randomPlayer = level.getRandomPlayer();
+                Player randomPlayer = level.getRandomLocalPlayer(); // Luminol - Fix mispatched entity custom spawning logic - Use local players for only the players in current tickregion
                 if (randomPlayer != null) {
                     RandomSource randomSource = level.random;
                     int i = (8 + randomSource.nextInt(24)) * (randomSource.nextBoolean() ? -1 : 1);
diff --git a/net/minecraft/world/level/levelgen/PhantomSpawner.java b/net/minecraft/world/level/levelgen/PhantomSpawner.java
index a7f56126a26e1fca86c39d8d656b648f5d6bb4ca..4626ee9f4410d8fd683db17b49ef79ab67eeda5f 100644
--- a/net/minecraft/world/level/levelgen/PhantomSpawner.java
+++ b/net/minecraft/world/level/levelgen/PhantomSpawner.java
@@ -40,7 +40,7 @@ public class PhantomSpawner implements CustomSpawner {
                     worldData.phantomSpawnerNextTick += (spawnAttemptMinSeconds + randomSource.nextInt(spawnAttemptMaxSeconds - spawnAttemptMinSeconds + 1)) * 20; // Folia - region threading
                     // Paper end - Ability to control player's insomnia and phantoms
                     if (level.getSkyDarken() >= 5 || !level.dimensionType().hasSkyLight()) {
-                        for (ServerPlayer serverPlayer : level.players()) {
+                        for (ServerPlayer serverPlayer : level.getLocalPlayers()) { // Luminol - Fix mispatched entity custom spawning logic - Use local players for only the players in current tickregion
                             if (!serverPlayer.isSpectator() && (!level.paperConfig().entities.behavior.phantomsDoNotSpawnOnCreativePlayers || !serverPlayer.isCreative())) { // Paper - Add phantom creative and insomniac controls
                                 BlockPos blockPos = serverPlayer.blockPosition();
                                 if (!level.dimensionType().hasSkyLight() || blockPos.getY() >= level.getSeaLevel() && level.canSeeSky(blockPos)) {